Mr Lloyd said she jumped out of the car and launched a frenzied attack on the retired firefighter.

He said: “She gets in the car, she’s as happy as Larry, big smile on her face. She kissed Gary on the cheek and said, ‘Thanks’.”

Richards then stopped the car near where Mr Rogers was walking his pet lurcher allowing Dennehy to carry out an even more brutal attack before stealing the dog and returning to the car, Mr Lloyd claimed.

Georgina Page told the court Dennehy had visited her home in Kings Lynn shortly after the murders and said she wanted her crime spree to end like Bonnie and Clyde.

Dennehy pleaded guilty to three murders and two attempted murders at the Old Bailey last November. She also confessed to preventing the lawful and decent burial of all three victims.

The mother, from Orton Goldhay, Peterborough, is currently in custody awaiting sentencing.

Richards of Orton Goldhay, Peterborough, denies two counts of attempted murder ad three counts of preventing the lawful and decent burial of a body.

Leslie Layton, 37, of Orton Goldhay, denies two counts of preventing the lawful and decent burial of a body and one count of perverting the course of justice.

A third man Robert Moore, 56, of Peterborough, has already admitted helping an offender and is awaiting sentence.